Westbury, NY 11555 Frost Dates
11555, near Westbury, NY: the frost window
Typically, the last spring freeze lands around 04/02, roughly 217 days out. Fall's first freeze usually shows up around 11/12, roughly 224 days after the last spring frost.
Westbury sits in USDA Zone 7b (5 to 10°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Westbury's growing season runs out in roughly 11 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Westbury's last frost
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/16 and only about 1 year in 10 sees frost after that.
Westbury against the rest of the dataset
At roughly 224 frost-free days, Westbury places 11,771 of 40,283 ZIP codes in this dataset. Within NY, it ranks 151 of 1,951.
Learn more
Two guides worth reading on 11555: local microclimates, on what one yard in Westbury can differ from the 11555 normal, and zone vs. frost date, on why Zone 7b and Westbury's frost date answer different questions.